NAabbr.无名麻醉剂(=Narcotics Anonymous)abbr.全国科学院会员（=National Academician）abbr.全国科学院(=National Academy)abbr.北美（=North America）abbr.不适用的（=Not Applicable）Naoum纳乌姆

1. Ships must follow the channel into the port.
   船只必须沿航道进入港口。
2. They aren't scouring any little channel.
   他们不想疏浚任何小航道。